过电位
发电
阳极
电解
工艺工程
电
光伏系统
高温电解
核工程
储能
阴极
环境科学
功率(物理)
汽车工程
化学
电气工程
电化学
电极
工程类
热力学
物理
物理化学
电解质
作者
Yuting Sun,Qian Tang,Jingdong Zhu,Nan Zheng,Yu Han,Gang Xiao,Meng Ni,Haoran Xu
出处
期刊:Energy
[Elsevier]
日期:2022-10-12
卷期号:263: 125725-125725
被引量:14
标识
DOI:10.1016/j.energy.2022.125725
摘要
Reversible solid oxide cell (rSOC) can flexibly switch between the electrolysis mode and the fuel cell mode for electrical energy storage and power generation. For practical application, sweeping gas is needed to bring in the reactants and take out the products timely. In this study, we use steam as anode sweeping gas in electrolysis to decrease the overpotential loss and collect pure O2, which is then used as the fuel cell cathode oxidant. The real fluctuating power generated from solar photovoltaic is used as the power supply, which allows rSOC to generate H2 from 6:45 a.m. to 5:45 p.m. and produce electricity in the night. Compared with the conventional strategy, the proposed system can utilize more than 35% electricity in electrolysis, and its efficiency and total H2 production can be increased by 8% and 50%, respectively. The total power generation and the power density are also increased by 290% and 160%, respectively. Overall, this new strategy results in a doubled round-trip voltage efficiency due to the much-decreased overpotential losses in the electrochemical processes. This study provides a guidance for the optimization of practical rSOC application with dynamic operating conditions.
科研通智能强力驱动
Strongly Powered by AbleSci AI